Ophthalmic mounting.



A. L. McKlNSTRY.

OPHTHALMlC MOUNTING. APPLICATION FILED DEC. 1a. 1915.

1,282,092, Patented Oct. 22, 1918.

can sris .anr carton ARTHUR L. MCKINSTRY, 0F SOUTHBRIDGE, MASSACHUSETTS, ASSIGNOR TO AMERICAN OPTICAL COMPANY, OF SOUTHBRIDGE, MASSACHUSETTS, A VOLUNTARY ASSOCIA- TION OF MASSACHUSETTS.

OIIITHALMIC MOUNTING.

Specification of Letters Patent.

Patented (let 22, 1918.

Application filed December 18, 1916. Serial No. 137,604.

T 0 all-whom it may concern:

Be it known that I, ARTHUR L. MCKIN- srnY. a citizen of the United States, residing at Southbridge, in the county of lVorceslens rim or frame with the metallic portionof an ophthalmic mounting.

A further object of the invention is the provision of a fitting of this character which will so inter-engage in the rim as to Prevent any relativesliding or twisting movement of the parts.

Other objects and advantages of my im: proved construction should be readily apparent by reference to the following specification taken in connection with the accompanying drawings, and it will be understood that I may make any modifications in the specific details of construction shown and de cribed within the scope of the appended claims without departing from or exceeding the spirit of my invention.

Figure 1 represents a front view of a mounting embodying my mounting.

Fig. ll represents a sectional view as on the line H-H of Fig. I.

Fig. ill represents a plan view of the blank before shaping.

Fig. IV represents a sectional View as on the line lVlV of Fig. Ill.

Fig. V represents a plan view of a slight modification of my construction.

Fig. VI represents a sectional view of the some applied to a frame. 4

In the drawings, in which similar characters of reference are employed to denote corresponding parts throughout the several views, the numeral 1 denotes the metal center or bridge of the mounting. having at each end one of mv improved clip or attaching members 2, which serves to secure to the bridge the zvlonite or other non-metallic or composition lens frame or rim 3, which has at its outer side an additional one of my improved attaching devices shaving the end piece 5 for the temple 6'which' retains the mounting in position on the face.

1 Previous to my invention it has been customary to make frames of the character just described but certain difficulties have been found in connection with the attachment of the parts due to the tendency of the parts to have arelative twisting or sliding movement allowing the mounting to become slightly shaky and consequently unsatisfactory in use.

It is, therefore, the essential purpose of my present invention to provide a clip which will unite the. parts against this'loosening or shaky movement while permitting of their ready attachment one to the other, and eliminating the weakening of parts by forming of holes therethrough for screws, rivets or other fastening devices, as has sometimes been deemed necessary in the attempt to get away from this relative loosening of the parts.

In the carrying out of my invention I preferably employ a clip member 2, which may be initially formed as a sheet metal stamping and subsequently curved to substantially U-shape in cross section, as illustrated in Figs. 11 and VI. In constructing the form of my clip member illustrated in Figs. H to IV inclusive, for example. 1 preferably shape the inner face thereof as by striking to press up therefrom the integral points or prongs 7 and the recesses or depressions 8. the ,recesses or depressions 8 bei g near the end of the clip member and ser ing a double purpose in that they are adapted both to receive longitudinal ridges forced up from the rim 3 by the application of the clip thereto, and also by creasing the clip on the inner side serve to facilitate bending and shaping of the same to fit the frame member 3.

Inuse the clip member being suitably formed it is applied to the frame member 3 with COllSlflGIz'lblQ pressure, this pressure being so distributed and being sutlici'ent to cause the prongs 7 to firmly bite into the frame member 3 and the entire clip to become slightly imbedded therein tohave a firm clenching or gripping engagement therewith. The pressure applied in this way is sutiicient to cause a "certain outward expansion of the frame member 3 so that it will fill up the recesses 8 with the ribs 9, as illustrated in Fig. H. As a resultthe frame is held against longitudinal sliding or twisting by the biting of the prongs ,or points 7 thereinto, and in addition is particularly braced against lateral twisting and also held somewhat against longitudinal or rotative movement relative to the clip on account of the inter-engagement of the ribs 9 and recesses 8, while the application of the clip produces the raised ribs 9 having if anything a reinforcing effect rather than a weakening as would be the case were the frame pierced or an undue number of prongs biting thereinto employed.

In Figs. V and VI, 1 have illustrated one alternative form of my construction i113, which in place of providing the recesses 8 I have provided the apertures 10 adapted to receive the bosses or knobs 11, which will be produced from the frame 3 by the pressure of application of the clip thereto, or which .may be previously produced on the frame to a greater or less extent and the clip then fitted thereonto.

From the foregoing description taken in connection with the accompanying draw-. ings, the construction and advantages of my improved attaching clip should be readily understood, and it will be seen that Ihave provided a simple and efiicient clip which may be readily applied to a composition frame, which will in nowise weaken the frame but which will very securely and firmly engage the frame to prevent any relativ e slipping of the parts.

1 claim:

l. The combimition with a noinnietallie lens frame, of a fitting applied thereto under pressure, said fitting having inwardly extending projections inside to bite into the frame by the force of application of the fitting and having recesses to receive portions of the frame expanding thereinto from the pressure of application of the adjacent portion of the fitting to the frame so as to hold the frame against movement.

2. The combination with a non-metallic yieldable frame, of a fitting therefor having the inner face provided with longitudinally extendinggrooves whereby as the fitting is applied to the frame under pressure the frame will extend into said grooves and shaping of the fitting around the frame will cause the Walls of the grooves to bite against and clampingly engage the ribs thus formed in the frame, and integral prongs upon the interior of the fitting adapted to bite into the frame to retain the same against longitudinal sliding or twisting movement.

3. The combination with a non-metallic frame member, of afitting therefor having its inner face formed with longitudinally eX- tending'grooves disposed to lie near the inv ward'ly curving faces of the framewhereby ,the fitting may be readily bent to curve around the frame and may be pressed under the frame to cause portions of the frame to expand into the recesses and be subsequently clampingly secured in the recesses by in lward, curving of the fitting around the frame,,and inwardly extending projections on the fitting caused to bite into he frame by the force of application of t e-iitting and thus to hold the frame securely against longitudinal sliding or twisting movement. testimony whereof I aflix my signature in the presence of two witnesses.

' ARTHUR L. McKINSTRY.

"fi itnesses:

iii.

Parsons, Hanvonsnn. 

